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$315+ Cheap flights from Ontario (ONT) to Singapore

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SIN
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
1 adult, Economy
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Cheap flight deals from Ontario to Singapore

Cheapest flights from Ontario to Singapore
Explore the most affordable flight options available from Ontario to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 11, 2026.

This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Wed 9/3010:00 pm
SIN
-
ONT
2 stops34h 16m
Delta
Deal found 3/10$635
This Korean Air deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:45 am
ONT
-
SIN
2 stops31h 15m
Korean Air
Sun 6/710:00 pm
SIN
-
ONT
2 stops34h 16m
Korean Air
Deal found 3/9$640
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/62:00 pm
ONT
-
SIN
2 stops48h 00m
Delta
Wed 9/307:30 am
SIN
-
ONT
2 stops30h 10m
Delta
Deal found 3/10$641
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:05 pm
ONT
-
SIN
2 stops44h 55m
Delta
Mon 8/3110:00 pm
SIN
-
ONT
2 stops50h 01m
Delta
Deal found 3/10$646
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Thu 9/177:30 am
SIN
-
ONT
2 stops31h 14m
Delta
Deal found 3/9$685
This Korean Air deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 am
ONT
-
SIN
2 stops25h 55m
Korean Air
Mon 9/287:30 am
SIN
-
ONT
2 stops30h 10m
Korean Air
Deal found 3/10$690
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/31:00 pm
ONT
-
SIN
2 stops49h 00m
Delta
Fri 8/287:30 am
SIN
-
ONT
2 stops31h 14m
Delta
Deal found 3/10$691
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Thu 9/177:30 am
SIN
-
ONT
2 stops31h 14m
Delta
Deal found 3/9$723
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Fri 8/287:30 am
SIN
-
ONT
2 stops31h 14m
Delta
Deal found 3/9$735
This Korean Air deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 am
ONT
-
SIN
2 stops31h 00m
Korean Air
Fri 9/251:25 am
SIN
-
ONT
2 stops36h 15m
Korean Air
Deal found 3/10$740
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 am
ONT
-
SIN
2 stops31h 00m
Delta
Mon 5/117:30 am
SIN
-
ONT
2 stops24h 40m
Delta
Deal found 3/6$757
This Korean Air deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:45 am
ONT
-
SIN
2 stops26h 10m
Korean Air
Mon 6/87:30 am
SIN
-
ONT
2 stops24h 46m
Korean Air
Deal found 3/6$762

Find flight deals from Ontario to Singapore

Keep the following information in mind while searching for Ontario to Singapore flight deals. Data was last updated March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$635
(Delta)

One-way from

$315
(Korean Air)

Popular in

December

Cheapest in

September

Average price

$776
Provider with most accurate pricing for Los Angeles Los Angeles-Singapore Changi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles Los Angeles-Singapore Changi flights.
Search Deals
From Ontario to Singapore
Search Deals
One-way flight from Ontario to Singapore
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($174 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 11, 2026.
Use the filters below to find and compare flights from Ontario to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Fri 5/8

6:45 am-11:55 pm

2 stops26h 10m

Singapore Changi

Thu 6/4

7:30 am-5:08 pm

2 stops24h 38m

$790

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 5/7

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Sat 6/6

8:45 am-10:50 pm

1 stop29h 05m

$817

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Mon 5/4

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Thu 5/7

8:35 pm-9:41 am

1 stop28h 06m

$821

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Fri 4/17

6:45 pm-6:45 am

1 stop21h 00m

Singapore Changi

Wed 5/6

9:00 am-8:36 pm

2 stops26h 36m

$822

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 9/5

7:00 am-11:55 pm

2 stops25h 55m

Singapore Changi

Sat 9/26

1:25 am-5:16 pm

2 stops30h 51m

$840

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sat 5/9

6:45 am-11:55 pm

2 stops26h 10m

Singapore Changi

Wed 6/10

7:30 am-5:16 pm

2 stops24h 46m

$917

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 5/10

6:45 am-5:00 am

2 stops31h 15m

Singapore Changi

Thu 6/4

7:30 am-5:08 pm

2 stops24h 38m

$917

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Thu 4/23

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Thu 4/30

9:00 am-8:36 pm

2 stops26h 36m

$926

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Fri 4/24

7:00 am-5:00 am

2 stops31h 00m

Singapore Changi

Sat 5/2

7:30 am-10:37 pm

2 stops30h 07m

$985
Quickest round-trip

OntarioSingapore

ONT - SIN

ONTSIN

Ontario

Sun 4/19

6:00 am-6:35 pm

1 stop21h 35m

Singapore Changi

Sun 4/26

9:00 am-12:20 pm

1 stop18h 20m

$1,017

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Ontario to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Singapore

What is the cheapest month to book a flight from Ontario to Singapore?

Currently, April is the cheapest month in which you can book a flight from Ontario to Singapore (average of $573). Flying from Ontario to Singapore in June is currently the most expensive (average of $769). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated March 11, 2026.
See what other customers who have flown with STARLUX Airlines,China Airlines, andUnited Airlines from Ontario to Singapore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
8.9
Very good
280 reviews

Food

8.7

Entertainment

8.8

Crew

9.2

Boarding

8.9

Overall

8.9

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
STARLUX Airlines
8.9
Very good
280 reviews
STARLUX Airlines
8.9
Very good
280 reviews

Food

8.7

Entertainment

8.8

Crew

9.2

Boarding

8.9

Overall

8.9

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
China Airlines
8.3
Very good
811 reviews
STARLUX Airlines
8.9
Very good
280 reviews

Food

8.7

Entertainment

8.8

Crew

9.2

Boarding

8.9

Overall

8.9

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.
United Airlines
7.4
Good
9,414 reviews
STARLUX Airlines
8.9
Very good
280 reviews

Food

8.7

Entertainment

8.8

Crew

9.2

Boarding

8.9

Overall

8.9

Comfort

8.9

Reviews

1 / 10
10.0
Excellent

Anonymous,Jan 2026

SEA - TPE

First time travelled with starlux and had best experience. Food was really good and crew is the best. Entertainment was also best. Having latest movies. I requested for isle seat at the last time and they provided me. Best airline service.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Singapore?

    If you book a flight to Singapore from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Ontario to Singapore?

    A quick flight from Ontario to Singapore can take about 21h 35m. Korean Air provides one of the quickest options available for as low as $817. There are 8791 mi between Ontario and Singapore. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Ontario to Singapore that include hotel bookings?

    Yes. In addition to deals on Ontario to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Singapore.

  • Can I find deals for business class flights from Ontario to Singapore?

    Yes. Cheapflights offers flight deals from Ontario to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Singapore?

    Currently, April is the cheapest month in which you can book a flight from Ontario to Singapore (average of $573). Flying from Ontario to Singapore in June is currently the most expensive (average of $769). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Ontario to Singapore

Discover the top 3 airlines that operate flights from Ontario to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$783Average$1,189FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$964Average$1,001FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$981Average$1,373FlexibilityNo cancel feeOn-timeN/A

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